Authorities in New York City are responding to a report of a shooting at a midtown office building that houses some of the country’s top financial firms and the National Football League.

Multiple casualties as gunman opened fire in the lobby of the midtown Manhattan building on Park Avenue that is home to the Blackstone investment firm and other corporations before moving to other floors.

Active shooter reported in New York Midtown building where Blackstone and NFL are based - Large numbers of police seen outside Manhattan skyscraper